basis of record Huys, R. (2001). Copepoda - Harpacticoida, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 268-280 (look up in IMIS) [details]

Taxonomy
Psammastacus Nicholls, 1935 (Family Leptastacidae)
Nicholls (1935) proposed the genus Psammastacus Nicholls, 1935 for two new species, P. confluens Nicholls, 1935 and P. brevicaudatus Nicholls, 1935, but did not designate a type species, without which the generic name remained unavailable as a nomen nudum. Lang’s (1948: 7) rule of designating the oldest species as type (unless stated otherwise) does not satisfy the provisions of the Code (see above). The first authors to formally fix a type species were Apostolov and Marinov (1988: 288) who designated P. confluens and consequently re- established the generic name. They also met the provisions of ICZN Art. 13.1.1 by providing a generic diagnosis (in Bulgarian) which serves to differentiate Psammastacus Apostolov & Marinov, 1988 from the other leptastacid genera. Accordingly, the latter generic name should take their authorship and date. Huys (1992: 121) showed that the original description of P. brevicaudatus was based on copepodids of P. confluens. Given this synonymy, the genus Psammastacus Apostolov & Marinov, 1988 remains monotypic with Psammastacus confluens (Nicholls, 1935) comb. nov. as the type.[details]